Finding the Fourth Proportional to 2,282.69, 3,150 and 1,288.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.69 : 3,150 = 1,288.05 : x
2. Step 2: Convert to fraction form
   2,282.69/3,150 = 1,288.05/x
3. Step 3: Cross multiply
   2,282.69x = 3,150 × 1,288.05
4. Step 4: Simplify right side
   2,282.69x = 4,057,357.50
5. Step 5: Solve for x
   x = 4,057,357.50/2,282.69
6. Step 6: Final answer
   x = 1,777.45